4.4 Copying a Sequence
When a sequence is being edited, or viewed, it may be copied to a user sequence by
pressing
. The LA101 will ask which user sequence (1-10) you want to copy
the sequence to. Press
to or to (for sequences 6-10). The sequence can
now be edited.
It is also possible to copy a whole bank of sequences into the user bank, by pressing
when the sequence editor prompt is displayed (fig. 4.6). The sequence editor
will prompt for a bank number, 1 to 10, where bank 1 contains sequences 11-20, bank 2
contains sequences 21-30 etc. Note that this operation will overwrite all 10 user
sequences.
Fig. 4.6 Copying a Sequence Bank Fig. 4.7 Selecting the Default Seq
Bank
4.5 Measurement Levels Amplitude range
Although many of the segments have been designed to conform with various standards
(using BBC, CCITT, ITC, EBU and BT levels), it is often necessary to use different
levels, and the LA101 allows each segment to have its level specified independently.
This is done by entering an integer level in dB (in the range -63 to +31) after the segment
letter, called the Measurement level for the segment. The measurement level of each
segment is transmitted in the FSK header for each segment and displayed and printed by
the LA102 next to each segment’s title.
The measurement level is relative to any Test Level that is in use when the sequence is
run. Note that a Test Level allows the whole sequence to be run at a different level, while
this measurement level allows each segment to be given its own relative level. The Test
Level plus measurement level must be within the working range of the unit (-101dB to
+26dB), otherwise a ‘MAX LEVEL EXCEEDED’ error will occur. Some segments
already have an intrinsic measurement level, for example, segment Q runs at -12dB and
can be said to have an intrinsic measurement level of -12dB. The intrinsic measurement
level is always overridden by the measurement level specified, so a segment definition of
‘Q+6’ is exactly equivalent to ‘P+6’ and both run a sweep at +6dB (relative to Test Level
which defaults to 0dBu).
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4. User Defined Sequences
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